HC Verma: Concepts of Physics - Volume 2 Electric Current through Gases Pages 351-352: Q9 Solution: The amplification factor of a triode operating in the linear…

QPages 351-352: Q9: HC Verma: Concepts of Physics - Volume 2 Electric Current through Gases Pages 351-352: Q9 Solution: The amplification factor of a triode operating in the linear…

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often mistake the amplification factor ($\mu$) for a voltage‑controlled gain and answer "grid potential"; however, $\mu$ is a fixed geometric constant set by the spacing between cathode, grid and plate, not by the instantaneous grid or plate voltages.

The amplification factor of a triode operating in the linear region depends strongly on _________ .

Multiple Choice Options

A the temperature of the cathode
B the plate potential
C the grid potential
D the separations of the grid from the cathode and the anode

Step-by-Step Verified Solution

**Answer:** (d) the separations of the grid from the cathode and the anode. **Step-by-Step Explanation:** The amplification factor depends strongly on the geometry of the tube (electrode spacing).

QPages 351-352: Q9: HC Verma: Concepts of Physics - Volume 2 Electric Current through Gases Pages 351-352: Q9 Solution: The amplification factor of a triode operating in the linear…

Multiple Choice Options

Step-by-Step Verified Solution

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